<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>活动管理</el-breadcrumb-item>
            <el-breadcrumb-item>活动列表</el-breadcrumb-item>
        </el-breadcrumb>

        <el-card>
            <el-alert
                    title="添加商品信息"
                    type="info"
                    center
                    show-icon
                    :closable="false">
            </el-alert>

            <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
                <el-step title="基本信息"></el-step>
                <el-step title="商品参数"></el-step>
                <el-step title="商品属性"></el-step>
                <el-step title="商品图片"></el-step>
                <el-step title="商品内容"></el-step>
                <el-step title="完成"></el-step>
            </el-steps>

            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
                <el-tabs :tab-position="'left'" v-model="activeIndex" :before-leave="beforeTab" @tab-click="tabClick">
                    <el-tab-pane label="基本信息" name="0">
                        <el-form-item label="商品名称" prop="goods_name">
                            <el-input v-model="addForm.goods_name"></el-input>
                        </el-form-item>
                        <el-form-item label="商品价格" prop="goods_price">
                            <el-input v-model="addForm.goods_price" type="number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品重量" prop="goods_weight">
                            <el-input v-model="addForm.goods_weight"></el-input>
                        </el-form-item>
                        <el-form-item label="商品数量" prop="goods_number">
                            <el-input v-model="addForm.goods_number"></el-input>
                        </el-form-item>
                        <el-form-item label="商品分类" prop="goods_cat">
                            <el-cascader
                                    v-model="addForm.goods_cat"
                                    :options="cateList"
                                    :props="cateProp"
                                    @change="handleChange"></el-cascader>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品参数" name="1">
                        <el-form-item :label="item.attr_name" v-for="item in manyTableDate" :key="item.attr_id">
                            <el-checkbox-group v-model="item.attr_vals">
                                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
                            </el-checkbox-group>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品属性" name="2">
                        <el-form-item :label="item.attr_name" v-for="item in onlyTableDate" :key="item.attr_id">
                            <el-input v-model="item.attr_vals"></el-input>
                        </el-form-item>
                    </el-tab-pane>
                    <el-tab-pane label="商品图片" name="3">
                        <el-upload
                                :action="uploadUrl"
                                :on-preview="handlePreview"
                                :on-remove="handleRemove"
                                list-type="picture"
                                :headers="headerObj"
                                :on-success="handleSuccess">
                            <el-button size="small" type="primary">点击上传</el-button>

                        </el-upload>
                    </el-tab-pane>
                    <el-tab-pane label="商品内容" name="4">
                        <quill-editor v-model="addForm.goods_introduce"></quill-editor>
                        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
                    </el-tab-pane>
                </el-tabs>
            </el-form>
        </el-card>

        <el-dialog
                title="图片预览"
                :visible.sync="preViewVisible"
                width="50%">
            <img :src="preViewPath" alt="" class="preViewImg">
        </el-dialog>
    </div>
</template>

<script>
    import _ from 'lodash';

    export default {
        name: "add",
        data() {
            return {
                activeIndex: '0',
                addForm: {
                    goods_name: '',
                    goods_price: 0,
                    goods_weight: 0,
                    goods_number: 0,
                    goods_cat: [],
                    pics: [],
                    goods_introduce: '',
                    attrs: []
                },
                addFormRules: {
                    goods_name: [
                        {required: true, message: '请输入商品名称', trigger: 'blur'},
                    ],
                    goods_price: [
                        {required: true, message: '请输入商品价格', trigger: 'blur'},
                    ],
                    goods_weight: [
                        {required: true, message: '请输入商品重量', trigger: 'blur'},
                    ],
                    goods_number: [
                        {required: true, message: '请输入商品数量', trigger: 'blur'},
                    ],
                    goods_cat: [
                        {required: true, message: '请输入商品分类', trigger: 'blur'},
                    ],
                },
                cateList: [],
                cateProp: {
                    value: 'cat_id',
                    label: 'cat_name',
                    children: 'children'
                },
                manyTableDate: [],
                onlyTableDate: [],
                uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
                headerObj: {
                    Authorization: window.sessionStorage.getItem('token')
                },
                preViewPath: '',
                preViewVisible: false,


            }
        },
        created() {
            this.getCateList();
        },
        methods: {
            async getCateList() {
                const {data: res} = await this.$http.get(`categories`);
                if (res.meta.status != 200) {
                    return this.$message.error("获取商品分类失败");
                }
                this.cateList = res.data;
            },

            handleChange() {
                console.log(this.addForm.goods_cat);
                if (this.addForm.goods_cat.length != 3) {
                    this.addForm.goods_cat = [];
                }
            },

            beforeTab(activeName, oldActiveName) {
                if (oldActiveName == '0' && this.addForm.goods_cat.length != 3) {
                    this.$message.error("请选择商品分类");
                    return false;
                }
            },

            async tabClick() {
                if (this.activeIndex == '1') {
                    const {data: res} = await this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`, {
                        params: {sel: 'many'}
                    });
                    if (res.meta.status != 200) {
                        return this.$message.error("获取商品分类失败");
                    }
                    this.manyTableDate = res.data;
                    res.data.forEach(item => {
                        item.attr_vals =
                            item.attr_vals.length == 0 ? [] : item.attr_vals.split(' ');
                    })
                    console.log(this.manyTableDate);

                } else if (this.activeIndex == '2') {
                    const {data: res} = await this.$http.get(`categories/${this.addForm.goods_cat[2]}/attributes`, {
                        params: {sel: 'only'}
                    });
                    if (res.meta.status != 200) {
                        return this.$message.error("获取商品分类失败");
                    }
                    this.onlyTableDate = res.data;
                    console.log(this.onlyTableDate);
                }
            },

            handlePreview(file) {
                console.log(file);
                this.preViewPath = file.response.data.url;
                this.preViewVisible = true;
            },

            handleRemove(file) {
                const tmpPath = file.response.data.tmp_path;
                const i = this.addForm.pics.findIndex(x => x.pic = tmpPath);
                this.addForm.pics.splice(i, 1);
            },

            handleSuccess(res) {
                const picInfo = {pic: res.data.tmp_path};
                this.addForm.pics.push(picInfo);
            },

            add() {
                this.$refs.addFormRef.validate(async valid => {
                    if (!valid) {
                        return this.$message.error("请填写完整信息");
                    }
                    const form = _.cloneDeep(this.addForm);
                    form.goods_cat = form.goods_cat.join(',');
                    this.manyTableDate.forEach(item => {
                        const newInfo = {attr_id: item.attr_id, attr_value: item.attr_vals.join(' ')};
                        this.addForm.attrs.push(newInfo);
                    });
                    this.onlyTableDate.forEach(item=>{
                        const newInfo = {attr_id: item.attr_id, attr_value: item.attr_vals};
                        this.addForm.attrs.push(newInfo);
                    });
                    form.attrs=this.addForm.attrs;
                    console.log(form);
                    const {data:res} = await this.$http.post(`goods`,form);
                    if (res.meta.status != 201) {
                        return this.$message.error("添加商品失败");
                    }
                    this.$message.success("添加商品成功");
                    this.$router.push('/goods');
                })
            },

        }
    }
</script>

<style scoped lang="less">
    .el-checkbox {
        margin: 0 10px 0 0 !important;
    }

    .preViewImg {
        width: 100%;
    }

    .btnAdd {
        margin-top: 15px;
    }
</style>